Spool holder



FIG. 1 is an exploded elevational view of the claimed design.

FIG. 2 is a top plan view.

FIG. 3 is a bottom plan view.

FIG. 4 is an exploded top perspective view.

FIG. 5 is an exploded bottom perspective view; and,

FIG. 6 is a top perspective view in an assembled position. 

CLAIM The ornamental design for spool holder, as shown and described. 